求助：大全401，悬而未决？

j96111

1.        In terms of physics, the characteristic feature of the roller coaster is that the cars’ potential energy, gained through their being lifted by a chain drive through the Earth’s gravity to the top of the first drop, has been converted to kinetic energy by the time the ride ends.

(A) cars’ potential energy, gained through their being lifted by a chain drive

(B) cars’ potential energy, a gain achieved as they are lifted by a chain drive

(C) potential energy from the cars’ being lifted by a chain drive

(D) potential energy of the cars, gained as a chain drive lifts them（D）

(E) potential energy gained by the cars, being achieved while a chain drive lifts them

看了很多以前的贴，还是不明白D中gained过去分词修饰谁？Aof B结构加现在、过去分词，现在、过去分词是修饰A还是B?

羽衣草

选Ｄ对吗？gained修饰 potential energy ，译为 potential energy 是如何取得的．这里是potential energy of the cars，就是你说的Aof B，是表所有格，即汽车的potential energy．因为汽车是没有生命的，所以用Aof B，如果是有生命的所有格，那就＇Ｓ

lewton

同意楼上的